WO2016104234A1 - Circuit frontal à haute fréquence et dispositif de communication - Google Patents

Circuit frontal à haute fréquence et dispositif de communication Download PDF

Info

Publication number
WO2016104234A1
WO2016104234A1 PCT/JP2015/085012 JP2015085012W WO2016104234A1 WO 2016104234 A1 WO2016104234 A1 WO 2016104234A1 JP 2015085012 W JP2015085012 W JP 2015085012W WO 2016104234 A1 WO2016104234 A1 WO 2016104234A1
Authority
WO
WIPO (PCT)
Prior art keywords
terminal
frequency
circuit
communication band
transmission
Prior art date
Application number
PCT/JP2015/085012
Other languages
English (en)
Japanese (ja)
Inventor
堀田篤
和田貴也
中江広和
Original Assignee
株式会社村田製作所
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 株式会社村田製作所 filed Critical 株式会社村田製作所
Priority to CN201580070664.8A priority Critical patent/CN107113016B/zh
Publication of WO2016104234A1 publication Critical patent/WO2016104234A1/fr
Priority to US15/631,711 priority patent/US10236925B2/en

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/18—Input circuits, e.g. for coupling to an antenna or a transmission line
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0053—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band
    • H04B1/0057—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with common antenna for more than one band using diplexing or multiplexing filters for selecting the desired band
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/01—Frequency selective two-port networks
    • H03H7/075—Ladder networks, e.g. electric wave filters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/38—Impedance-matching networks
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/46—Networks for connecting several sources or loads, working on different frequencies or frequency bands, to a common load or source
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/005—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • H04B1/0064—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges with separate antennas for the more than one band
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits

Definitions

  • the present invention relates to a high-frequency front-end circuit provided in a transmission / reception device that transmits and receives a high-frequency signal.
  • the communication band includes a time division communication method (TDD method) and a frequency division method (FDD method).
  • TDD method time division communication method
  • FDD method frequency division method
  • the front-end circuit of a wireless communication terminal includes a branching circuit.
  • a front-end circuit described in Patent Document 1 includes an antenna (shared antenna), a switch circuit, a duplexer that demultiplexes an FDD communication signal, a filter for a TDD transmission signal, and a filter for a TDD reception signal Is provided.
  • the switch circuit connects the antenna and the duplexer at the time of FDD transmission / reception.
  • the switch circuit connects the antenna to a transmission signal filter during TDD transmission.
  • the switch circuit connects the antenna to a received signal filter during TDD reception.
  • An object of the present invention is to provide a small front-end circuit capable of transmitting and receiving an FDD communication band and a TDD communication band.
  • the high-frequency front-end circuit of the present invention includes a first antenna terminal, a first front-end terminal, a second front-end terminal, a transmission / reception branching circuit, a first frequency variable filter, a second antenna terminal, and a third front-end terminal.
  • the first antenna terminal outputs a transmission signal of a time division communication band and a frequency division communication band, and receives a reception signal of a frequency division communication band.
  • the first front end terminal receives a transmission signal of a time division communication band and a frequency division communication band.
  • the second front end terminal outputs a reception signal of a frequency division communication band.
  • the transmission / reception branching circuit transmits a transmission signal input from the first front end terminal to the first antenna terminal, and transmits a reception signal input from the first antenna terminal to the second front end terminal.
  • the first frequency variable filter is connected between the first front end terminal and the transmission / reception demultiplexing circuit, or is included in the transmission / reception demultiplexing circuit.
  • the second antenna terminal receives a reception signal of a time division communication band.
  • the third front end terminal outputs a reception signal of a time division communication band.
  • the first frequency variable filter passes the transmission signal of the frequency division communication band and the transmission signal of the time division communication band, and transmits the transmission signal of the frequency division communication band and the time division communication band. Attenuate signals other than transmission signals.
  • the transmission side and the reception side in the time division communication band are separated, and an antenna is prepared for each. Yes.
  • One antenna is connected to a receiving circuit in a time division communication band, and the other antenna is a combination of a transmission circuit in a time division communication band and a transmission / reception circuit in a frequency division communication band. Connected with the circuit.
  • the transmission / reception branching circuit In order to construct a circuit in which the transmission circuit in the time division communication band and the transmission / reception circuit in the frequency division communication band are integrated, the transmission / reception branching circuit, the transmission signal and the frequency in the time division communication band are configured.
  • a frequency variable filter is connected between the front end terminal that outputs a transmission signal in the communication band of the division method.
  • This frequency variable filter passes the transmission signal of the frequency division communication band and the transmission signal of the time division communication band, and other than the transmission signal of the frequency division communication band and the transmission signal of the time division communication band. Attenuate the signal. By doing so, it is possible to transmit and receive the frequency division communication band and the time division communication band, and the circuit scale is kept small even when the number of communication bands increases.
  • the transmission signal antenna and the reception signal antenna of the time division communication band are different, so that the transmission path of the time division transmission signal and the transmission path of the reception signal are isolated while maintaining a small circuit scale. Is secured.
  • the high-frequency front-end circuit of the present invention further includes a filter connected between the second antenna terminal and the third front-end terminal.
  • the high-frequency front-end circuit of the present invention preferably includes third and fourth front-end terminals and a time division communication branching circuit.
  • the third front end terminal is a terminal from which a reception signal of the first communication band of the time division method is output.
  • the fourth front end terminal is a terminal from which a reception signal of the second communication band of the time division method is output.
  • the demultiplexing circuit for time division communication transmits a reception signal of the first communication band of the time division method input from the second antenna terminal to the third front end terminal, and the time division method input from the second antenna terminal. The received signal of the second communication band is transmitted to the fourth front end terminal.
  • the reception signal of the time division communication band can be received with low loss for each communication band.
  • the front end circuit according to the present invention is separated from the first communication signal group composed of communication signals of a plurality of communication bands input from the first front end terminal and output from the second front end terminal. It is preferable to include a transmission / reception circuit for a second communication signal group that transmits and receives a communication signal of the second communication signal group, and a demultiplexing circuit for approximate band division.
  • the schematic band division demultiplexing circuit is connected between the transmission / reception demultiplexing circuit and the first antenna terminal.
  • the schematic band division demultiplexing circuit demultiplexes the transmission / reception signal of the first communication signal group and the transmission / reception signal of the second communication signal group.
  • the frequency division communication band having a frequency close to that of the time division communication band is separated from the time division communication band. It is possible to demultiplex and transmit / receive a frequency-divided communication band of frequencies.
  • the front end circuit of the present invention may have the following configuration.
  • the second antenna terminal receives a reception signal for transmission signals of a plurality of communication bands input from the first front end terminal.
  • the front end circuit further includes fifth and sixth front end terminals, a first switch circuit, and third and fourth frequency variable filters.
  • the fifth front end terminal is a terminal from which reception signals of the first and second communication bands of the time division method are output.
  • the sixth front end terminal is a terminal from which a reception signal in the same communication band as the reception signal output from the second front end terminal is output.
  • the first switch circuit is connected to the second antenna terminal, and outputs a time division reception signal to the fifth front end terminal, and outputs a frequency division reception signal to the sixth front end terminal.
  • the third frequency variable filter is connected between the first switch circuit and the fifth front end terminal.
  • the fourth frequency variable filter is connected between the first switch circuit and the sixth front end terminal.
  • the first antenna terminal is used as a terminal for connecting to the primary antenna
  • the second antenna terminal is used as a terminal for connecting to the secondary antenna.
  • the second antenna terminal can be used as a terminal for connecting to a receiving antenna of a time division communication band.
  • a wireless communication terminal that transmits and receives in a frequency division communication band may be provided with a primary antenna and a secondary antenna. In this configuration, by using these antennas, it is possible to receive a time-division communication band and suppress an increase in circuit scale.
  • the front end circuit of the present invention may further include a second switch circuit that selectively connects the first front end terminal and the fifth front end terminal to the seventh front end terminal.
  • the number of external connection terminals of the front-end circuit can be reduced, and the connection configuration with the transmission / reception IC connected thereto can be simplified.
  • the front end circuit of the present invention may further include a transmission side amplifier circuit connected to the first front end terminal.
  • the front end circuit including the transmission side amplifier circuit can be made compact.
  • the front end circuit of the present invention may further include a reception side amplifier circuit connected to the second front end terminal.
  • the front-end circuit including the amplifier circuit on the transmission side and the reception side can be made compact.
  • the communication device of the present invention includes the above-described high-frequency front-end circuit and an RFIC to which the transmission side amplifier circuit is connected.
  • the communication device can be made compact by providing the configuration of the front end circuit described above.
  • the communication device of the present invention includes the above-described high-frequency front-end circuit and an RFIC to which the receiving side amplification circuit is connected.
  • the communication device can be made compact by providing the configuration of the front end circuit described above.
  • the high-frequency front end circuit of the present invention includes a first antenna terminal, a first front end terminal, a second front end terminal, a transmission / reception branching circuit, a first variable frequency filter, a second antenna terminal, and a third front terminal. End terminals are provided.
  • the first antenna terminal receives a reception signal of a time division communication band and a frequency division communication band, and outputs a transmission signal of the frequency division communication band.
  • the first front end terminal outputs a reception signal of a time division communication band and a frequency division communication band.
  • a transmission signal of a frequency division communication band is input to the second front end terminal.
  • the transmission / reception demultiplexing circuit transmits the transmission signal input from the second front end terminal to the first antenna terminal, and transmits the reception signal input from the first antenna terminal to the first front end terminal.
  • the first variable frequency filter is connected between the first front end terminal and the transmission / reception demultiplexing circuit, or is included in the transmission / reception demultiplexing circuit.
  • the second antenna terminal receives a transmission signal of a time division communication band.
  • the third front end terminal outputs a transmission signal in a time division communication band.
  • the first frequency variable filter allows a frequency division communication band reception signal and a time division communication band reception signal to pass, and a frequency division communication band reception signal and a time division communication band reception signal. Attenuate signals other than.
  • a front-end circuit capable of transmitting and receiving a frequency division type communication band and a time division type communication band can be configured in a small size.
  • FIG. 1 is a circuit diagram of a front end circuit according to a first embodiment of the present invention.
  • FIG. 4 is a circuit diagram of a front end circuit according to a second embodiment of the present invention.
  • FIG. 6 is a circuit diagram of a front end circuit according to a third embodiment of the present invention.
  • FIG. 6 is a circuit diagram of a front end circuit according to a fourth embodiment of the present invention. It is a circuit diagram at the time of transmission / reception of the communication band of the frequency division system in the front end circuit according to the fourth embodiment of the present invention. It is a circuit diagram at the time of transmission of the communication band of a time division system in the front end circuit concerning the 4th embodiment of the present invention.
  • FIG. 9 is a circuit diagram of a front end circuit according to a fifth embodiment of the present invention. It is a circuit block diagram of the communication apparatus which concerns on the 6th Embodiment of this invention.
  • FIG. 10 is a circuit diagram of a front end circuit according to a seventh embodiment of the present invention. It is a circuit diagram of the front end circuit based on the 8th Embodiment of this invention.
  • FIG. 1 is a circuit diagram of a front-end circuit according to the first embodiment of the present invention.
  • the front end circuit 10 includes antenna terminals Pant1, Pant2 and front end terminals Pfe1, Pfe2, Pfe3, Pfe4.
  • the antenna terminal Pant1 corresponds to the first antenna terminal of the present invention.
  • the antenna terminal Pant2 corresponds to the second antenna terminal of the present invention.
  • the front end terminal Pfe1 corresponds to the first front end terminal of the present invention.
  • the front end terminal Pfe2 corresponds to the second front end terminal of the present invention.
  • the front end terminal Pfe3 corresponds to the third front end terminal of the present invention.
  • the front end terminal Pfe4 corresponds to a fourth front end terminal of the present invention.
  • the antenna terminal Pant1 is connected to the antenna ANT1.
  • the antenna terminal Pant2 is connected to the antenna ANT2.
  • the front end terminal Pfe1 is a terminal to which transmission signals of a plurality of time division communication bands and a plurality of frequency division communication bands are input. That is, the front end terminal Pfe1 is a terminal to which all transmission signals transmitted by the front end circuit 10 are input.
  • the front-end terminal Pfe2 is a terminal that outputs a reception signal of a frequency division communication band.
  • the front end terminal Pfe3 is a terminal that outputs a reception signal of the first communication band of the time division method.
  • the front end terminal Pfe4 is a terminal that outputs a reception signal of the second communication band of the time division method.
  • the front end circuit 10 includes a circulator 21, frequency variable filters 31 and 32, and a demultiplexer 41.
  • the duplexer 41 includes frequency fixed filters 411 and 412.
  • the circulator 21 corresponds to the “transmission / reception branching circuit” of the present invention.
  • the duplexer 41 corresponds to the “time division communication demultiplexing circuit” of the present invention.
  • the circulator 21 is connected to the antenna terminal Pant1, the frequency variable filter 31, and the frequency variable filter 32.
  • the variable frequency filter 31 is connected to the front end terminal Pfe1.
  • the variable frequency filter 32 is connected to the front end terminal Pfe2.
  • the circulator 21 transmits the transmission signal from the frequency variable filter 31 to the antenna terminal Pant1, and transmits the reception signal from the antenna terminal Pant1 to the frequency variable filter 32.
  • the circulator 21 has a wide pass band through which transmission signals of a plurality of communication bands can pass between the frequency variable filter 31 and the antenna terminal Pant1 and between the antenna terminal Pant1 and the variable filter 32, and is transmitted by the front end circuit 10. Signals can be transmitted with low loss in the frequency bands of all communication signals.
  • the frequency variable filter 31 is a filter that passes the communication band of the transmission signal input from the outside to the front end terminal Pfe1 and attenuates its harmonic frequency components and the like.
  • the frequency variable filter 31 adjusts the pass band and the attenuation band according to the communication band of the transmission signal.
  • the frequency variable filter 31 is a dual-purpose filter for transmission signals of all communication bands input from the front end terminal Pfe1.
  • the frequency variable filter 32 is a filter that passes the communication band of the reception signal (reception signal of the frequency division communication band) output from the front end terminal Pfe2 to the outside and attenuates the harmonic frequency component and the like.
  • the frequency variable filter 32 adjusts the pass band and the attenuation band according to the reception signal.
  • the frequency variable filter 32 is a dual-purpose filter for reception signals in all frequency division communication bands output from the front end terminal Pfe2.
  • the common terminal of the duplexer 41 is connected to the antenna terminal Pant2.
  • the individual terminal of the frequency fixed filter 411 of the duplexer 41 is connected to the front end terminal Pfe3.
  • the frequency fixed filter 411 is a filter that passes the communication band of the reception signal of the first communication band of the time division method and attenuates the harmonic frequency component thereof.
  • the individual terminal of the frequency fixed filter 412 of the duplexer 41 is connected to the front end terminal Pfe4.
  • the fixed frequency filter 412 is a filter that passes the communication band of the reception signal of the second communication band of the time division method and attenuates the harmonic frequency component thereof.
  • the transmission signals of all communication bands are input from the front end terminal Pfe1 and filtered by the frequency variable filter 31.
  • the transmission signal after the filter processing is output from the antenna terminal Pant1 via the circulator 21 and radiated from the antenna ANT1 to the outside.
  • the reception signals of all frequency division communication bands received by the antenna ANT1 are filtered by the frequency variable filter 32 via the antenna terminal Pant1 and the circulator 21.
  • the received signal after the filter processing is output from the front end terminal Pfe2.
  • the antenna ANT1 also receives a reception signal in a time division communication band, but is blocked by the frequency variable filter 32 and is not transmitted to the front end terminal Pfe2.
  • the received signal in the time division communication band received by the antenna ANT2 is input to the duplexer 41 via the antenna terminal Pant2.
  • the reception signal of the first communication band of the time division method passes through the frequency fixed filter 411 and is output from the front end terminal Pfe3.
  • the reception signal of the first communication band of the time division method is blocked by the frequency fixed filter 412 and is not transmitted to the front end terminal Pfe4.
  • the received signal of the second communication band of the time division method passes through the frequency fixed filter 412 and is output from the front end terminal Pfe4.
  • the received signal in the second communication band of the time division method is blocked by the frequency fixed filter 411 and is not transmitted to the front end terminal Pfe3.
  • the transmission signal antenna and the reception signal antenna of the time division communication band are different, and the transmission path of the transmission signal and the reception signal of the time division communication band are different. Therefore, ensuring the isolation between the transmission path of the time division transmission signal and the transmission path of the reception signal while reducing the circuit scale by having a common part between the frequency division circuit and the time division circuit. Can do.
  • the transmission circuit and the reception circuit of a plurality of frequency division communication bands are common, the circuit scale increases even if the number of frequency division communication bands increases. This can be suppressed.
  • a frequency variable filter is arranged in the transmission / reception path of the frequency division communication band, transmission / reception with a high S / N ratio and low loss can be performed for each communication band signal without increasing the circuit scale. realizable.
  • the filter arranged in the transmission path of the received signal in the time division communication band is a frequency fixed filter. Therefore, compared with the case where a frequency variable filter is used, the received signal can be filtered with low loss.
  • the above-mentioned front end circuit 10 can be formed by a laminated body in which a circuit pattern is formed and a mounting type electronic component mounted on the laminated body.
  • a transmission side amplification circuit for amplifying a transmission signal is connected to the front end terminal Pfe1 of the front end circuit 10 described above, and a first reception side amplification circuit for amplifying the reception signal is connected to the front end terminal Pfe2.
  • a high frequency module may be configured by connecting a second reception side amplification circuit for amplifying the reception signal to the front end terminals Pfe3 and Pfe4.
  • the front-end circuit 10 is formed by a laminated body on which a circuit pattern is formed and a mounting-type electronic component mounted on the laminated body. What is necessary is just to implement
  • a high frequency module may be configured by connecting an RFIC that performs transmission / reception control to the front end terminals Pfe1, Pfe2, pfe3, and Pfe4 of the front end circuit 10 described above.
  • the front-end circuit 10 is formed by a laminated body in which a circuit pattern is formed and a mounting type electronic component mounted on the laminated body, and the RFIC is realized by an IC chip mounted on the laminated body. do it.
  • FIG. 2 is a circuit diagram of a front end circuit according to the second embodiment of the present invention.
  • the front end circuit 10A according to the present embodiment is obtained by adding a circulator 22, frequency variable filters 33 and 34, a diplexer 51, and front end terminals Pfe5 and Pfe6 to the front end circuit 10 according to the first embodiment.
  • the diplexer 51 corresponds to the “schematic band dividing demultiplexing circuit” of the present invention.
  • the diplexer 51 is connected between the antenna terminal Pant1 and the circulators 21 and 22. More specifically, the diplexer 51 includes a low-pass filter 511 and a high-pass filter 512.
  • the high-pass filter 512 is connected between the antenna terminal Pant 1 and the circulator 21.
  • the low-pass filter 511 is connected between the antenna terminal Pant1 and the circulator 22.
  • the high-pass filter 512 uses a high frequency band (for example, near 2 [GHz]) in the frequency band transmitted and received by the front-end circuit 10A as a pass band and a low frequency band (for example, near 900 [MHz]) as an attenuation band. Yes. On the contrary, the low-pass filter 511 uses a low frequency band in the frequency band transmitted and received by the front-end circuit 10A as a pass band and a high frequency band as an attenuation band.
  • a high frequency band for example, near 2 [GHz]
  • a low frequency band for example, near 900 [MHz]
  • the circulator 22 is connected to the high-pass filter 512, the frequency variable filter 33, and the frequency variable filter 34 of the diplexer 51.
  • the frequency variable filter 33 is connected to the front end terminal Pfe5.
  • the front end terminal Pfe5 is a terminal to which a transmission signal in a low frequency band in the frequency division method is input.
  • the front end terminal Pfe5 can also be used as a terminal to which a time division transmission signal using a low frequency band is input.
  • the variable frequency filter 34 is connected to the front end terminal Pfe6.
  • the front end terminal Pfe6 is a terminal from which a reception signal in a low frequency band in the frequency division method is output.
  • the circulator 22 transmits the transmission signal from the frequency variable filter 33 to the low-pass filter 511 of the diplexer 51 and transmits the reception signal from the low-pass filter 511 to the frequency variable filter 34.
  • the circulator 22 has a wide pass band and passes transmission / reception signals of a plurality of communication bands between the frequency variable filter 33 and the diplexer 51 and between the diplexer 51 and the frequency variable filter 34 at least in a low frequency band in the frequency division method. And can be transmitted with low loss.
  • the frequency variable filter 33 is a filter that passes the communication band of the transmission signal input from the outside to the front end terminal Pfe5 and attenuates its harmonic frequency components and the like.
  • the frequency variable filter 33 adjusts the pass band and the attenuation band according to the transmission signal.
  • the frequency variable filter 33 is a dual-purpose filter for transmission signals of all communication bands input from the front end terminal Pfe5.
  • the frequency variable filter 34 is a filter that passes the communication band of the reception signal (reception signal of the frequency division communication band) output from the front end terminal Pfe6 to the outside and attenuates its harmonic frequency component and the like.
  • the frequency variable filter 34 adjusts the pass band and the attenuation band according to the reception signal.
  • the frequency variable filter 34 is a dual-purpose filter for the reception signals of all frequency division communication bands output from the front end terminal Pfe6.
  • the transmission path of the frequency division communication band and the transmission path of the time division communication band are combined. Accordingly, a front-end circuit that can use the frequency division communication band and the time division communication band can be formed in a small size.
  • the configuration of the present embodiment not only the frequency band used by the time division communication band, but also the frequency band separated from the frequency band used by the time division communication band is used. Even if the number of communication bands increases, it is possible to suppress an increase in circuit scale. In addition, since a frequency variable filter is arranged in the transmission / reception path of the frequency division communication band, transmission / reception with a high S / N ratio and low loss can be performed for each communication band signal without increasing the circuit scale. realizable.
  • the filter arranged in the transmission path of the received signal in the time division communication band is a frequency fixed filter. Therefore, compared with the case where a frequency variable filter is used, the received signal can be filtered with low loss.
  • FIG. 3 is a circuit diagram of a front end circuit according to the third embodiment of the present invention.
  • the front end circuit 10B according to the present embodiment differs from the front end circuit 10 according to the first embodiment in the circuit configuration connected to the antenna terminal Pant2.
  • the front end circuit 10B includes a circulator 21 and frequency variable filters 31 and 32. These are the same as the circulator 21 and the frequency variable filters 31 and 32 of the front end circuit 10 according to the first embodiment.
  • the front end circuit 10B includes frequency variable filters 61 and 62, a switch circuit 71, and front end terminals Pfe7 and Pfe8.
  • the frequency variable filter 61 corresponds to the third frequency variable filter of the present invention
  • the frequency variable filter 62 corresponds to the fourth frequency variable filter of the present invention.
  • the switch circuit 71 corresponds to the first switch circuit of the present invention.
  • the front end terminal Pfe7 corresponds to the fifth front end terminal of the present invention
  • the front end terminal Pfe8 corresponds to the sixth front end terminal of the present invention.
  • the front end terminal Pfe7 is a terminal from which a reception signal of a time division communication band is output.
  • the front end terminal Pfe8 is a terminal from which a reception signal of a frequency division communication band is output. That is, the front end terminal Pfe8 outputs the same reception signal as the front end terminal Pfe2.
  • the front end terminal Pfe2 is a primary reception signal output terminal, and the front end terminal Pfe8 is a secondary reception signal output terminal.
  • the antenna ANT2 is used as a diversity antenna, a diversity reception signal is output from the front end terminal Pfe8.
  • the switch circuit 71 includes a common terminal and first and second selected terminals. The switch circuit 71 switches and connects the common terminal to either the first or second selected terminal.
  • the common terminal of the switch circuit 71 is connected to the antenna terminal Pant2.
  • a first selected terminal of the switch circuit 71 is connected to the frequency variable filter 61.
  • the variable frequency filter 61 is connected to the front end terminal Pfe7.
  • a second selected terminal of the switch circuit 71 is connected to the frequency variable filter 62.
  • the frequency variable filter 62 is connected to the front end terminal Pfe8.
  • the frequency variable filter 61 is a filter that passes the communication band of the reception signal (reception signal in the time division communication band) output to the outside from the front end terminal Pfe7 and attenuates its harmonic frequency component and the like.
  • the frequency variable filter 61 adjusts the pass band and the attenuation band according to the reception signal.
  • the frequency variable filter 61 is a dual-purpose filter for reception signals of all time division communication bands output from the front end terminal Pfe7. If the time-division communication band uses only one frequency, the frequency variable filter 61 may be replaced with a frequency fixed filter.
  • the frequency variable filter 62 has the same function as the frequency variable filter 32.
  • the front end circuit 10B having such a configuration operates as follows.
  • the switch circuit 71 When performing transmission / reception in a time division communication band, the switch circuit 71 connects the common terminal to the first selected terminal. Thus, the received signal of the time division communication band received by the antenna ANT2 is filtered by the frequency variable filter 61 via the switch circuit 71 and output from the front end terminal Pfe7.
  • the switch circuit 71 When performing transmission / reception in a frequency division communication band, the switch circuit 71 connects the common terminal to the second selected terminal. Thus, the received signal in the frequency division communication band received by the antenna ANT2 is filtered by the frequency variable filter 62 via the switch circuit 71 and output from the front end terminal Pfe8.
  • the front end circuit 10B of the present embodiment can use the antenna ANT2 used as a secondary antenna (diversity antenna) in the frequency division communication band for reception of the time division communication band.
  • the reception sensitivity of the frequency division communication band can be improved.
  • a duplexer using an inductor and a capacitor instead of the switch circuit 71 is used.
  • a branching circuit such as a duplexer using a SAW filter may be used.
  • FIG. 4 is a circuit diagram of a front end circuit according to the fourth embodiment of the present invention.
  • FIG. 5 is a circuit diagram at the time of transmission / reception of a frequency division type communication band in a front-end circuit according to a fourth embodiment of the present invention.
  • FIG. 6 is a circuit diagram at the time of transmission of a time division communication band in the front end circuit according to the fourth embodiment of the present invention.
  • FIG. 7 is a circuit diagram at the time of reception of a time division communication band in the front end circuit according to the fourth embodiment of the present invention.
  • the front end circuit 10C according to the present embodiment is obtained by adding a switch circuit 72 and a front end terminal Pfe9 to the front end circuit 10B according to the third embodiment, and incorporating front end terminals Pfe1 and Pfe7.
  • the switch circuit 72 corresponds to the second switch circuit of the present invention.
  • the front end terminal Pfe9 corresponds to the seventh front end terminal of the present invention.
  • the switch circuit 72 includes a common terminal and first and second selected terminals.
  • the switch circuit 72 switches and connects the common terminal to either the first or second selected terminal.
  • the first selected terminal of the switch circuit 72 corresponds to the front end terminal Pfe1 according to the third embodiment.
  • the second selected terminal of the switch circuit 72 corresponds to the front end terminal Pfe7 according to the third embodiment.
  • the front end terminal Pfe9 is an input terminal for a transmission signal in a frequency division communication band. Further, the front end terminal Pfe9 is an input terminal for a transmission signal of a time division communication band and an output terminal for a reception signal.
  • the front end circuit 10C having such a configuration operates as follows.
  • the switch circuit 71 connects the antenna terminal Pant2 and the frequency variable filter 62.
  • the switch circuit 72 connects the front end terminal Pfe9 and the frequency variable filter 31.
  • the transmission signal of the frequency division communication band is input from the front end terminal Pfe9 and is filtered by the frequency variable filter 31 via the switch circuit 72.
  • the filtered transmission signal is transmitted to the antenna terminal Pant1 via the circulator 21 and radiated from the antenna ANT1 to the outside.
  • the received signal of the frequency division communication band is received by the antenna ANT1 and the antenna ANT2.
  • the antenna ANT1 is a primary antenna
  • the antenna ANT2 is a secondary antenna (diversity antenna).
  • the reception signal received by the antenna ANT1 is input from the antenna terminal Pant1.
  • the received signal is filtered by the frequency variable filter 32 via the circulator 21 and output as a primary received signal from the front end terminal Pfe2.
  • the reception signal received by the antenna ANT2 is input from the antenna terminal Pant2.
  • the received signal is filtered by the frequency variable filter 62 via the switch circuit 71 and output as a diversity received signal from the front end terminal Pfe8.
  • the switch circuit 72 connects the front end terminal Pfe 9 and the frequency variable filter 31.
  • the common terminal may be connected to any of the frequency variable filters 61 and 62, and the common terminal may be connected to any of the frequency variable filters 61 and 62 as long as the switch circuit 71 can be disconnected. It is better not to.
  • the transmission signal in the time division communication band is input from the front end terminal Pfe9 and is filtered by the frequency variable filter 31 via the switch circuit 72.
  • the filtered transmission signal is transmitted to the antenna terminal Pant1 via the circulator 21 and radiated from the antenna ANT1 to the outside.
  • the switch circuit 71 when receiving a time division communication band, connects the antenna terminal Pant2 and the frequency variable filter 61.
  • the switch circuit 72 connects the front end terminal Pfe9 and the frequency variable filter 61.
  • the reception signal of the time division communication band is received by the antenna ANT2.
  • a reception signal received by the antenna ANT2 is input from the antenna terminal Pant2.
  • the received signal is filtered by the frequency variable filter 61 via the switch circuit 71.
  • the filtered reception signal is output from the front end terminal Pfe9 via the switch circuit 72.
  • the number of external terminals of the front end circuit 10C can be reduced by using the configuration of the present embodiment.
  • the connection configuration with the transmission / reception IC connected to the front end circuit 10C can be simplified.
  • the front end module including the transmission / reception IC and the front end circuit 10C can be reduced in size.
  • FIG. 8 is a circuit diagram of a front-end circuit according to the fifth embodiment of the present invention.
  • the front end circuit 10D uses a diplexer 51 while the front end circuit 10A according to the second embodiment divides the communication band into two, a high band and a low band.
  • the triplexer 52D is used by dividing the band into three, a high band, a middle band, and a low band.
  • the high frequency is 2.3 [GHz] or more
  • the middle frequency is 1.4 [GHz] to 2.2 [GHz]
  • the low frequency is 1.0 [GHz]. GHz] or less.
  • the number of time division communication bands transmitted and received by the front end circuit 10D is larger than that of the front end circuit 10A.
  • the basic characteristics of each circuit element are the same as those of the front-end circuit 10A, and the setting of the element value varies depending on this specification. In order to perform transmission / reception with this specification, the front-end circuit 10D has the following configuration.
  • the front end circuit 10D includes antenna terminals Pant1, Pant2, front end terminals Pfe1, Pfe2, Pfe5, Pfe6, Pfe7, Pfe8, Pfe31, Pfe32, Pfe33, Pfe41, and Pfe42.
  • the antenna terminal Pant1 is connected to the antenna ANT1.
  • the antenna terminal Pant2 is connected to the antenna ANT2.
  • the front end terminal Pfe1 is a terminal to which transmission signals of a plurality of high frequency band division communication bands and a high frequency division frequency communication band are input.
  • the front end terminal Pfe2 is a terminal that outputs a reception signal of a communication band of a high frequency division scheme.
  • the front end terminal Pfe5 is a terminal to which transmission signals of a plurality of communication bands of a low frequency division system are input.
  • the front end terminal Pfe6 is a terminal that outputs reception signals of a plurality of communication bands of a low frequency division scheme.
  • the front end terminal Pfe7 is a terminal to which transmission signals of a plurality of communication bands in the middle frequency division scheme and a plurality of communication bands in the middle frequency division scheme are input.
  • the front-end terminal Pfe8 is a terminal that outputs a reception signal of a communication band of a middle frequency division scheme.
  • Front end terminals Pfe31, Pfe32, Pfe33, Pfe41, and Pfe42 are terminals to which received signals in a time division communication band using different frequency bands are output.
  • the front-end circuit 10D includes circulators 21, 22, 23, frequency variable filters 31, 32, 33, 34, 35, 36, duplexers 41, 42, frequency fixed filters 411, 412, 421, 422, 430, “rough band division.
  • a triplexer 52D corresponding to the “demultiplexing circuit” and a switch circuit 71D are provided.
  • the triplexer 52D includes a low-pass filter 521D, a band-pass filter 522D, and a high-pass filter 523D.
  • the antenna terminal Pant1 is connected to the common terminal of the triplexer 52D.
  • the low pass filter 521D of the triplexer 52D is connected to the circulator 22.
  • the band pass filter 522 ⁇ / b> D is connected to the circulator 23.
  • the high pass filter 523D is connected to the circulator 21.
  • the antenna terminal Pant1 is connected to the circulator 22 via the low-pass filter 521D.
  • the antenna terminal Pant1 is connected to the circulator 23 via a bandpass filter 522D.
  • the antenna terminal Pant1 is connected to the circulator 21 via a high pass filter 523D.
  • the low-pass filter 521D, the band-pass filter 522D, and the high-pass filter 523D that constitute the triplexer 52D are fixed-frequency filters, and are realized by combining an inductor and a capacitor, for example.
  • the frequency variable filter 31 is connected between the circulator 21 and the front end terminal Pfe1.
  • the variable frequency filter 32 is connected between the circulator 21 and the front end terminal Pfe2.
  • the frequency variable filter 33 is connected between the circulator 22 and the front end terminal Pfe5.
  • the variable frequency filter 34 is connected between the circulator 22 and the front end terminal Pfe6.
  • the variable frequency filter 35 is connected between the circulator 23 and the front end terminal Pfe7.
  • the variable frequency filter 36 is connected between the circulator 23 and the front end terminal Pfe8.
  • the antenna terminal Pant2 is connected to the common terminal of the switch circuit 71D.
  • a first selected terminal of the switch circuit 71D is connected to the duplexer 41.
  • a second selected terminal of the switch circuit 71D is connected to the duplexer 42.
  • a third selected terminal of the switch circuit 71D is connected to a bandpass type frequency fixed filter 430.
  • the duplexer 41 includes a frequency fixed filter 411 and a frequency fixed filter 412.
  • the frequency fixed filter 411 is connected to the front end terminal Pfe31.
  • the fixed frequency filter 412 is connected to the front end terminal Pfe41.
  • the duplexer 42 includes a frequency fixed filter 421 and a frequency fixed filter 422.
  • the fixed frequency filter 421 is connected to the front end terminal Pfe32.
  • the fixed frequency filter 422 is connected to the front end terminal Pfe42.
  • the fixed frequency filter 430 is connected to the front end terminal Pfe33.
  • the transmission path for the frequency division transmission signal and the transmission path for the time division transmission signal are shared in the middle and high bands.
  • a front-end circuit that can use a frequency division type communication band and a time division type communication band can be formed in a small size.
  • the filters for the transmission signal and reception signal in the frequency division communication band are frequency variable filters, an increase in the number of filters accompanying an increase in the number of bands is suppressed. Thereby, it is possible to suppress an increase in the circuit scale of the front-end circuit even if the communication band increases.
  • FIG. 9 is a circuit block diagram of a communication apparatus according to the sixth embodiment of the present invention.
  • the communication device 1 includes a BBIC 2, an RFIC 3, a transmission side amplification circuit 4, reception side amplification circuits 5 and 6, a switch circuit 7, and a front end circuit 10.
  • the front end circuit 10 has the circuit configuration shown in the first embodiment.
  • the front end terminal Pfe1 is connected to the output terminal of the transmission side amplifier circuit 4.
  • the input end of the transmission side amplifier circuit 4 is connected to the RFIC 3.
  • the front end terminal Pfe2 is connected to the input end of the reception side amplifier circuit 5.
  • the output terminal of the reception side amplifier circuit 5 is connected to the RFIC 3.
  • the front end terminals Pfe3 and Pfe4 are connected to a selected terminal of the switch circuit 7.
  • the selected terminal to which the front end terminal Pfe3 is connected and the selected terminal to which the front end terminal Pfe4 is connected are different terminals, and are selectively connected to the common terminal of the switch circuit 7.
  • the common terminal of the switch circuit 7 is connected to the input terminal of the reception side amplifier circuit 6.
  • the output terminal of the reception side amplifier circuit 6 is connected to the RFIC 3.
  • RFIC3 is connected to BBIC2.
  • the BBIC 2 performs signal processing in the baseband frequency region in the communication device 1.
  • the RFIC 3 performs signal processing in the high frequency region in the communication device 1.
  • the RFIC 3 generates frequency division and time division transmission signals and outputs them to the transmission side amplifier circuit 4.
  • the RFIC 3 demodulates the reception signal input from the reception side amplification circuits 5 and 6.
  • the transmission side amplifier circuit 4 has a wide band amplification characteristic, and amplifies the transmission signals of a plurality of communication bands of the frequency division method and the time division method transmitted by the high frequency front end circuit 10 with high efficiency.
  • the receiving side amplifier circuit 5 has a wide band amplification characteristic, and amplifies received signals of a plurality of frequency division communication bands received by the high frequency front end circuit 10 with high efficiency.
  • the reception-side amplifier circuit 6 has a wide band amplification characteristic, and amplifies received signals of a plurality of time division communication bands received by the high-frequency front-end circuit 10 with high efficiency. Thereby, the circuit scale can be reduced as compared with the case where the amplifier circuit is arranged for each communication band.
  • a communication device that transmits and receives a frequency division communication band and a time division communication band can be configured in a small size. it can.
  • the transmission side amplification circuit 4, the reception side amplification circuits 5, 6 and the switch circuit 7 in this embodiment are mounted on a laminate constituting the high frequency front end circuit 10, and a circuit comprising these is also used as the high frequency front end circuit. Good.
  • the front end circuit 10 is used.
  • the other front end circuits 10A, 10B, 10C, and 10D described above and front end circuits 10E and 10F, which will be described later, may be used.
  • the number depends on the number of front end terminals of each front end circuit.
  • the transmission side amplification circuit, the reception side amplification circuit, and the RFIC side circuit may be configured.
  • FIG. 10 is a circuit diagram of a front-end circuit according to the seventh embodiment of the present invention.
  • the front-end circuit 10E omits the circulator 21 and the front-end terminal Pfe4 from the front-end circuit 10 according to the first embodiment, and includes a filter for received signals in a frequency division communication band.
  • the frequency fixed filter 413 is used instead of the duplexer 41 and the frequency fixed filter 411 is used.
  • the antenna terminal Pant1 is connected to the frequency variable filter 31E and the frequency fixed filter 413.
  • the set of the frequency variable filter 31E and the frequency fixed filter 413 corresponds to the “transmission / reception branching circuit” of the present invention.
  • the frequency variable filter 31E is connected to the front end terminal Pfe1.
  • the frequency fixed filter 41 is connected to the front end terminal Pfe2.
  • the front end terminal Pfe1 is a terminal to which transmission signals of a time division communication band and a frequency division communication band are input.
  • the front end terminal Pfe2 is a terminal that outputs a reception signal of a frequency division communication band.
  • the number of each communication band is appropriately set according to the specification.
  • the antenna terminal Pant2 is connected to the frequency fixed filter 411.
  • the frequency fixed filter 411 is connected to the front end terminal Pfe3.
  • the front-end terminal Pfe3 is a terminal that outputs a reception signal of a time division communication band.
  • the same operational effects as those of the above-described embodiment can be obtained.
  • the number of components constituting the front end circuit 10E is reduced, and the front end circuit can be made smaller.
  • the transmission signal has higher power than the reception signal. Therefore, the transmission signal filter is generally larger than the reception signal filter. For this reason, in the front-end circuit according to each of the above-described embodiments, the frequency division type communication band transmission signal filter and the time division type communication band transmission signal filter are both used as the reception signal filter. The front end circuit can be more effectively reduced in size as compared with the aspect in which both are used.
  • FIG. 11 is a circuit diagram of a front-end circuit according to the eighth embodiment of the present invention.
  • the front end circuit 10F according to the present embodiment is different from the front end circuit 10E according to the seventh embodiment in the connection relationship between the antenna terminal, the front end terminal, and each filter.
  • the antenna terminal Pant1 is connected to the frequency variable filter 31F and the frequency fixed filter 414.
  • the set of the frequency variable filter 31F and the frequency fixed filter 414 corresponds to the “transmission / reception branching circuit” of the present invention.
  • the frequency variable filter 31F is connected to the front end terminal Pfe10.
  • the fixed frequency filter 414 is connected to the front end terminal Pfe11.
  • the front end terminal Pfe10 is a terminal that outputs a reception signal in a time division communication band and a reception signal in a frequency division communication band.
  • the front end terminal Pfe11 is a terminal to which a transmission signal in a frequency division communication band is input.
  • the antenna terminal Pant2 is connected to the frequency fixed filter 415.
  • the fixed frequency filter 415 is connected to the front end terminal Pfe12.
  • the front end terminal Pfe12 is a terminal to which a transmission signal of a time division communication band is input.
  • the antenna terminal Pant1 and the frequency variable filter 31E and the frequency fixed filter 413 are used.
  • the antenna terminal Pant1 and the frequency variable filter are used.
  • a circulator 21 similar to that of the first embodiment may be connected between 31F and the fixed frequency filter 414. In this case, the circulator 21 corresponds to the “transmission / reception branching circuit” of the present invention.
  • Communication device 2 BBIC 3: RFIC 4: Transmission side amplification circuit 5, 6: Reception side amplification circuit 7: Switch circuits 10, 10A, 10B, 10C, 10D, 10E, 10F: Front end circuits 21, 22, 23: Circulators 31, 32, 33, 34, 35, 36, 31E, 31F: Frequency variable filter 41, 42: Duplexer 51: Diplexer 51D: Triplexer 61, 62: Frequency variable filter 71, 72: Switch circuits 411, 412, 413, 415, 415, 421, 422, 430 : Frequency fixed filter 511: Low-pass filter 512: High-pass filter ANT1, ANT2: Antennas Pfe1, Pfe2, pfe3, Pfe4, Pfe5, Pfe6, Pfe7, Pfe8, Pfe9, Pfe10, Pfe11, Pfe12: Front end terminals

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Transceivers (AREA)

Abstract

L'invention concerne un circuit frontal (10) comprenant : une borne d'antenne (Pant1) ; des bornes frontales (Pfe1 et Pfe2) ; un circulateur (21) ; et des filtres à fréquence variable (31 et 32). Le circulateur (21) transmet, à la borne d'antenne (Pant1), un signal de transmission dans une bande de communication d'un système à répartition en fréquence et signal de transmission dans une bande de communication d'un système à répartition dans le temps, reçus de la part de la borne frontale (Pfe1). Le circulateur (21) transmet un signal reçu en provenance de la borne d'antenne (Pant1) à la borne frontale (Pfe2). Le filtre à fréquence variable (31) est connecté entre la borne frontale (Pfe1) et le circulateur (21) et permet aux signaux de transmission du système à répartition en fréquence et du système à répartition dans le temps de le traverser tout en atténuant les autres signaux. Le filtre à fréquence variable (32) est connecté entre le circulateur (21) et la borne frontale (Pfe2), et permet aux signaux reçus du système à répartition en fréquence de le traverser tout en atténuant les autres signaux.
PCT/JP2015/085012 2014-12-26 2015-12-15 Circuit frontal à haute fréquence et dispositif de communication WO2016104234A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201580070664.8A CN107113016B (zh) 2014-12-26 2015-12-15 高频前端电路及通信装置
US15/631,711 US10236925B2 (en) 2014-12-26 2017-06-23 High frequency front-end circuit and communication device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014263750 2014-12-26
JP2014-263750 2014-12-26

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/631,711 Continuation US10236925B2 (en) 2014-12-26 2017-06-23 High frequency front-end circuit and communication device

Publications (1)

Publication Number Publication Date
WO2016104234A1 true WO2016104234A1 (fr) 2016-06-30

Family

ID=56150259

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/085012 WO2016104234A1 (fr) 2014-12-26 2015-12-15 Circuit frontal à haute fréquence et dispositif de communication

Country Status (3)

Country Link
US (1) US10236925B2 (fr)
CN (1) CN107113016B (fr)
WO (1) WO2016104234A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106301516A (zh) * 2016-08-08 2017-01-04 华为技术有限公司 一种分集接收机及终端
CN108933609A (zh) * 2017-05-27 2018-12-04 华为技术有限公司 Tdd/fdd可配置装置、方法、射频模块及通信设备

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102559978B1 (ko) * 2017-02-21 2023-07-26 삼성전자 주식회사 복수의 주파수 밴드들을 이용한 d2d 통신을 지원하는 프론트 엔드 모듈과 그를 구비한 전자 장치
US10454434B2 (en) * 2017-07-21 2019-10-22 Murata Manufacturing Co., Ltd. Communication unit
CN110061757A (zh) * 2018-01-18 2019-07-26 中兴通讯股份有限公司 一种微波宽带双工器及微波收发信装置
CN109728836A (zh) * 2019-02-22 2019-05-07 广东圣大电子有限公司 一种宽带跳频频分双工通信收发装置
CN111181606A (zh) * 2019-12-31 2020-05-19 Oppo广东移动通信有限公司 射频模组及电子设备
US11469503B2 (en) * 2020-02-28 2022-10-11 T-Mobile Usa, Inc. Self-optimizing wide band array antennas
JP2021180357A (ja) * 2020-05-11 2021-11-18 株式会社村田製作所 高周波モジュールおよび通信装置
CN114337721A (zh) * 2021-11-30 2022-04-12 中国电子科技集团公司第五十四研究所 一种多载波通信系统及方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002141828A (ja) * 2000-11-02 2002-05-17 Nikko Co 広帯域アンテナフィルタ及びそれを用いた高周波フロントエンド回路
US20110212747A1 (en) * 2008-10-22 2011-09-01 Zte Corporation Dual-mode mobile phone and method of the same for inhibiting gsm/cdma mutual interference
JP2012044290A (ja) * 2010-08-16 2012-03-01 Murata Mfg Co Ltd 高周波モジュール

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10053205B4 (de) 2000-10-26 2017-04-13 Epcos Ag Kombinierte Frontendschaltung für drahtlose Übertragungssysteme
US8571489B2 (en) * 2010-06-03 2013-10-29 Broadcom Corporation Front end module with tone injection
CN103460611B (zh) * 2011-04-14 2015-08-19 株式会社村田制作所 高频前端电路
US9088326B2 (en) * 2012-07-18 2015-07-21 Rf Micro Devices, Inc. Front end radio architecture having a split band arrangement with co-banding
GB2512586B (en) * 2013-04-02 2015-08-12 Broadcom Corp Switch arrangement
US9276623B2 (en) * 2013-08-20 2016-03-01 Aviacomm Inc. Cost effective multiband RF front-end architecture for mobile applications

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002141828A (ja) * 2000-11-02 2002-05-17 Nikko Co 広帯域アンテナフィルタ及びそれを用いた高周波フロントエンド回路
US20110212747A1 (en) * 2008-10-22 2011-09-01 Zte Corporation Dual-mode mobile phone and method of the same for inhibiting gsm/cdma mutual interference
JP2012044290A (ja) * 2010-08-16 2012-03-01 Murata Mfg Co Ltd 高周波モジュール

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106301516A (zh) * 2016-08-08 2017-01-04 华为技术有限公司 一种分集接收机及终端
US10700759B2 (en) 2016-08-08 2020-06-30 Huawei Technologies Co., Ltd. Diversity receiver and terminal
US11063654B2 (en) 2016-08-08 2021-07-13 Huawei Technologies Co., Ltd. Diversity receiver and terminal
CN108933609A (zh) * 2017-05-27 2018-12-04 华为技术有限公司 Tdd/fdd可配置装置、方法、射频模块及通信设备
CN108933609B (zh) * 2017-05-27 2021-01-12 华为技术有限公司 Tdd/fdd可配置装置、方法、射频模块及通信设备

Also Published As

Publication number Publication date
US20170302317A1 (en) 2017-10-19
CN107113016A (zh) 2017-08-29
CN107113016B (zh) 2019-06-11
US10236925B2 (en) 2019-03-19

Similar Documents

Publication Publication Date Title
WO2016104234A1 (fr) Circuit frontal à haute fréquence et dispositif de communication
EP2938000B1 (fr) Circuit de fréquence radio et terminal mobile
TWI645685B (zh) 旁通路徑之損失減少
EP2911305B1 (fr) Multiplexeur
US9287918B2 (en) High-frequency front-end circuit
US7917170B2 (en) Multiple-band radio frequency (RF) circuit and method for a wireless communication device
US10057044B2 (en) Front-end circuit
KR101945798B1 (ko) 고주파 프런트엔드 회로
US20210006274A1 (en) Radio frequency front end circuit and communication device
CN211606532U (zh) 高频信号收发电路
KR20130031786A (ko) 신호 송수신 분리 디바이스 및 이를 포함하는 통신 시스템
JP2015061198A (ja) 電子回路
US11437959B2 (en) High frequency amplification circuit, high frequency front-end circuit, and communication device
JP6365795B2 (ja) 高周波モジュール
JP5360163B2 (ja) 高周波フロントエンドモジュール
US10320364B2 (en) Radio-frequency module
JP6428184B2 (ja) 高周波フロントエンド回路、高周波モジュール
US9893709B2 (en) RF triplexer architecture
WO2019044704A1 (fr) Module haute fréquence et dispositif de communication
US11881844B2 (en) Multiplexer
JP2008154201A (ja) 送信装置
KR101390914B1 (ko) 가변 전치단 모듈
KR100986517B1 (ko) 무선통신장치
JP2006109257A (ja) デュアルシステム受信装置および通信装置
KR20150142201A (ko) Rf 모듈

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15872803

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

NENP Non-entry into the national phase

Ref country code: JP

122 Ep: pct application non-entry in european phase

Ref document number: 15872803

Country of ref document: EP

Kind code of ref document: A1